Ireland Self-Employed — Form 11 Income Tax Return

Establish that the client is a chargeable person required to file Form 11 (non-PAYE income exceeding €5,000 gross under s959B TCA 1997), confirm residency status and tax registration on ROS, and rule out out-of-scope situations such as companies (Form CT1), partnerships (Form 1 Firms), or non-residents. Collect the PPS number, filing status, and prior-year Notice of Assessment or Form 11 if available.

Gather all source documents for the tax year: full-year bank statement (AIB, BOI, PTSB, Revolut Business, or other), sales invoices, purchase invoices, capital asset records, and the prior-year preliminary tax payment receipt. For VAT-registered clients, obtain the VAT3 bi-monthly returns to reconcile net turnover. Apply the Irish bank statement pattern library to classify every transaction as income, deductible expense, capital item, excluded item, or Tier 2 mixed-use pending.

Compute the adjusted Schedule D Case I (trade) or Case II (profession) profit for Form 11 Panel B under the 'wholly and exclusively' test (TCA 1997, s.81). Apply capital allowances at 12.5% per annum on plant and machinery (8-year write-down), with motor vehicles capped at €24,000. Confirm mixed-use percentages for home office, vehicle, and phone/broadband. Block entertainment under s.840 TCA 1997 and remove any income tax, USC, or PRSI payments from deductions.

Apply the full three-charge computation: income tax at 20% up to the standard rate band (€44,000 single / €53,000 married one earner for 2025) and 40% above, less personal credits (Single Person €2,000, Married €4,000, Earned Income Credit €2,000); USC across the four bands with a 3% surcharge on non-PAYE income exceeding €100,000; and PRSI Class S at 4.125% blended (4.1% Jan–Sep 2025, 4.2% Oct–Dec 2025) with a minimum €650 annual contribution. Factor in any pension contributions within age-related percentage limits on earnings capped at €115,000.

Calculate the preliminary tax obligation due by 31 October (or the ROS pay-and-file extended date in mid-November) under the safe-harbour rules in ss.952–959 TCA 1997: pay at least the lower of 100% of the prior year's final liability or 90% of the current year's actual liability. First-year self-employed clients have no preliminary tax obligation. Advise on the direct-debit option (105% of pre-preceding year spread monthly). Highlight the 5% late surcharge (max €12,695) if filed within two months late, and 10% (max €63,485) beyond two months.

Assemble the completed Form 11 working paper and submit via ROS (Revenue Online Service). Prepare the reviewer brief summarising all Tier 2 flags, conservative defaults applied, and items requiring professional judgement before submission. The working paper is not filed without sign-off by a qualified Irish tax practitioner (Chartered Accountant, CPA Ireland, or AITI-qualified Tax Consultant). Record-keeping obligations under TCA 1997, s.886 require retention of all supporting records for six years.